No data cleaning in fixation_detection and saccade_detection

[Tamplier]

Hello.
I'm not sure if the project is still alive (last update was 2 years ago). But...
I've tried to create some pictures with analyser and found that data with zero values isn't excluded. Because of that I have many fixations and hight "temperature" in the upper left corner. Is it a bug? There are no problems to remove missing values with the following code:

#remove empty values
mx = numpy.array(x==missing, dtype=int)
my = numpy.array(y==missing, dtype=int)
x = x[(mx+my) != 2]
y = y[(mx+my) != 2]
time = time[(mx+my) != 2]